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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <mutex>
#include <boost/icl/interval_map.hpp>
#include <boost/range/iterator_range.hpp>
#include "common/assert.h"
#include "common/common_types.h"
#include "core/memory.h"
#include "video_core/rasterizer_accelerated.h"
namespace VideoCore {
namespace {
template <typename Map, typename Interval>
constexpr auto RangeFromInterval(Map& map, const Interval& interval) {
return boost::make_iterator_range(map.equal_range(interval));
}
} // Anonymous namespace
RasterizerAccelerated::RasterizerAccelerated(Core::Memory::Memory& cpu_memory_)
: cpu_memory{cpu_memory_} {}
RasterizerAccelerated::~RasterizerAccelerated() = default;
void RasterizerAccelerated::UpdatePagesCachedCount(VAddr addr, u64 size, int delta) {
std::lock_guard lock{pages_mutex};
const u64 page_start{addr >> Core::Memory::PAGE_BITS};
const u64 page_end{(addr + size + Core::Memory::PAGE_SIZE - 1) >> Core::Memory::PAGE_BITS};
// Interval maps will erase segments if count reaches 0, so if delta is negative we have to
// subtract after iterating
const auto pages_interval = CachedPageMap::interval_type::right_open(page_start, page_end);
if (delta > 0) {
cached_pages.add({pages_interval, delta});
}
for (const auto& pair : RangeFromInterval(cached_pages, pages_interval)) {
const auto interval = pair.first & pages_interval;
const int count = pair.second;
const VAddr interval_start_addr = boost::icl::first(interval) << Core::Memory::PAGE_BITS;
const VAddr interval_end_addr = boost::icl::last_next(interval) << Core::Memory::PAGE_BITS;
const u64 interval_size = interval_end_addr - interval_start_addr;
if (delta > 0 && count == delta) {
cpu_memory.RasterizerMarkRegionCached(interval_start_addr, interval_size, true);
} else if (delta < 0 && count == -delta) {
cpu_memory.RasterizerMarkRegionCached(interval_start_addr, interval_size, false);
} else {
ASSERT(count >= 0);
}
}
if (delta < 0) {
cached_pages.add({pages_interval, delta});
}
}
} // namespace VideoCore
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